dwarfs cichlid/rams

[miggi]

if i put rams in my 48" by 12" by 15", how many pairs should i get? I thought 2 would be ok, considering i hope they will breed. will they pick on each other?
Same question for flags or keyholes - can u think of any other cichlid types that would easily be suited to a medium sized community (no guppies and neons lol).
Another small thing lol, a UK gallon and a US gallon is different. Is there a conversion table somewhere? Are litres different too??
Thanks guys,
Miggi

 

[619 Fish GOD]

Sorry i can't help with the voulume thing but all the dwarf cichlids in my sig get along and its only 3 foot

 

[Aussie_Star]

yea 2 pairs would do fine, i use www.frontosa.com then the calculator bit